Heavy quark diffusion and lattice correlators
نویسنده
چکیده
We study charmonia correlators at finite temperature. We analyze to what extent heavy quarkonia correlators are sensitive to the effect of heavy quark transport and whether it is possible to constrain the heavy quark diffusion constant by lattice calculations. Preliminary lattice calculations of quarkonia correlators performed on anisotropic lattices show that they are sensitive to the effect of heavy quark transport, but much detailed calculations are required to constrain the value of the heavy quark diffusion constant.
منابع مشابه
Low energy moments of heavy quark current correlators at four loops
We describe several techniques for the calculation of multi-loop integrals and their application to heavy quark current correlators. As new results, we present the fourloop correction to the second and third physical moment in the low-energy expansions of vector, axial-vector and scalar quark current correlators. Using a Ward identity, we obtain the third and fourth moment for the pseudo-scalar...
متن کاملOn temperature dependence of quarkonium correlators
I discuss the temperature dependence of quarkonium correlators calculated in lattice QCD. I show that the dominant source of the temperature dependence comes from the zero mode contribution, while the the temperature dependence associated with melting of bound states is quite small. I study the zero mode contribution quantitatively for different quark masses and show that it is well described b...
متن کاملRelations among zero momentum correlators for heavy-light systems in QCD.
Relations connecting various zero momentum correlators of interpolating fields for pseudoscalar and scalar channel, containing one heavy and one light quark field, are derived from the Euclidean space formulation of the QCD functional integral. These relations may serve as constraints on the phenomenological models or approaches motivated from QCD, and suggest a method to extract the chiral qua...
متن کاملar X iv : h ep - l at / 0 40 80 38 v 1 2 5 A ug 2 00 4 Preliminary results of the heavy - light meson spectrum using chirally improved light quarks
Using a " wall " of quark point sources, we invert the chirally improved Dirac operator to create an " incoherent " collection of quark propagators which originate from all spatial points of the source time slice. The lowest-order NRQCD approximation is used to create heavy-quark propagators from the same wall source. However, since the numerical cost involved in computing such heavy-quark prop...
متن کاملPreliminary Results of the Heavy-light Meson Spectrum Using Chirally Improved Light Quarks
Using a " wall " of quark point sources, we invert the chirally improved Dirac operator to create an " incoherent " collection of quark propagators which originate from all spatial points of the source time slice. The lowest-order NRQCD approximation is used to create heavy-quark propagators from the same wall source. However, since the numerical cost involved in computing such heavy-quark prop...
متن کامل